Bimetallic thermometer is what?

Bimetallic thermometer is what? The instrument to introduce to you! Bimetallic thermometer is a kind of measurement in the field of low temperature test instrument. Bimetallic thermometer can be directly measured in the process of various production - 80 ℃ ~ + 500 ℃ within the scope of liquid, steam and gas medium temperature. Structure bimetallic thermometer is the round shape into threaded heat bimetallic strip as thermal devices, and put it in a protective sleeve tube, one end is fixed, known as the fixed end, the other end of the connection on a thin shaft, a free end. Spool at the free end is equipped with a pointer. When the temperature changes, the resulting thermal devices the free end of the rotation, drive the thin axis from the Angle of the pointer changes, corresponding temperature indicator on the dial. Bimetallic thermometer pointer to the connection with the protection tube direction bimetallic thermometer can be divided into axial, radial, and universal type 3 kinds. In order to meet the different needs of practical production, the bimetallic thermometer has different installation fixed form: movable external thread pipe joint, movable threaded pipe joints, fixed nipple, card sets of nipple, flange joint and a fixed flange. Bimetallic thermometer the advantage of fast response speed, small volume, good linearity and relatively stable, some products abroad also has high temperature performance. Bimetallic thermometer is in custody, installation, use and transportation process, should try to avoid collision protection tube, don't make the protection tube bending, deformation. When installation, it is forbidden to twist the instrument shell. Instrument should be in - 30 ℃ ~ 80 ℃ environment temperature in normal work. Bimetallic thermometer protecting tube immersed in the measured medium length must be greater than the length of the thermal components, generally greater than 100 mm in length, 0 50 ℃ range into greater than 150 mm in length, so as to ensure the accuracy of measurement. Bimetallic thermometer in custody, use the installation and transportation, should avoid collision protection tube, do not make the protection tube bending variant and the table when the spanner is used. Instrument of the above introduction, we know the bimetallic thermometer? Instrument, our perception of human changes in temperature with temperature touched!